| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
| Cc: | Andrew Dunstan <andrew(at)dunslane(dot)net>, Andres Freund <andres(at)anarazel(dot)de>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Noah Misch <noah(at)leadboat(dot)com>, Bharath Rupireddy <bharath(dot)rupireddyforpostgres(at)gmail(dot)com>, Justin Pryzby <pryzby(at)telsasoft(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Direct I/O |
| Date: | 2023-04-08 23:05:22 |
| Message-ID: | 3651624.1680995122@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Thomas Munro <thomas(dot)munro(at)gmail(dot)com> writes:
> On Sun, Apr 9, 2023 at 10:08 AM Andrew Dunstan <andrew(at)dunslane(dot)net> wrote:
>> btrfs
> Aha!
Googling finds a lot of suggestions that O_DIRECT doesn't play nice
with btrfs, for example
https://www.mail-archive.com/linux-btrfs(at)vger(dot)kernel(dot)org/msg92824.html
It's not clear to me how much of that lore is still current,
but it's disturbing.
regards, tom lane
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